Australian authorities are investigating a breach of the country's federal parliamentary computing network after a suspected hacking attempt, the Australian parliament revealed Friday.

“Following a security incident on the parliamentary computing network, a number of measures have been implemented to protect the network and its users,” parliamentary authorities said in a statement.

The statement, released by House of Representatives Speaker Tony Smith and Senate President Scott Ryan, said there's no evidence that data had been accessed in the breach, but investigations are continuing.

“To undertake such an attack, you need some big resources, so a state actor is most likely,” James Der Derian, director of the Centre for International Security Studies at the University of Sydney, told Reuters news agency.

“You have to look and see who has a grievance against Australia, and the most obvious suspects would be China and Russia.”

Relations with China have deteriorated since 2017, after Canberra accused Beijing of interfering in its domestic affairs. Both countries have since attempted to mend ties, but Australia continues to be wary of China.

The Australian cyber breach follows revelations that parliamentarians in Britain were targeted by an attempt to hack into their email and phone contact lists earlier this week.

Hacking the 2016 US election: a timeline

Democrats in the dark

Over the summer, a security company hired by the Democratic National Convention tells the DNC that they have been successfully infiltrated by hackers for more than year. Two groups, known as Cozy Bear and Fancy Bear, both have links to the Russian government, the Washington Post reports.

Hacking the 2016 US election: a timeline

All eyes on Russia

At the end of July, the FBI launches an investigation into whether or not the Russian government ordered the DNC hack. Kremlin spokesman Dmitry Peskov calls the move “paranoid.”

Hacking the 2016 US election: a timeline

‘Russia, if you're listening'

On the campaign trail, Republican nominee Donald Trump encourages Russia to “find the 30,000 emails that are missing.” In a series of debates with rival Hillary Clinton, Trump casts doubt on Moscow's role in hacks that targeted the DNC and Clinton's campaign manager, John Podesta.

Hacking the 2016 US election: a timeline

WikiLeaks targets Clinton

Anti-secrecy website WikiLeaks begins releasing slightly compromising emails from Clinton campaign chairman John Podesta. Co-founder Julian Assange defends targeting Clinton, saying Trump's own statements are indictment enough of the Republican nominee. Over a period of months, WikiLeaks consistently denies allegations that its sources are based in Russia.

Hacking the 2016 US election: a timeline

CIA, FBI investigations

In a rare moment of complete agreement for the two biggest intelligence agencies in the US, both the FBI and CIA come to the conclusion that the Russian government sought to influence the US election by promoting unfavorable coverage of Hillary Clinton.

Hacking the 2016 US election: a timeline

Donald and Vladimir

Trump, who has made no secret of his admiration for Russian President Vladimir Putin, calls the intelligence reports “ridiculous.” Anti-Clinton voices slam the probe as a distraction meant to discredit the now president-elect. This puts Trump at odds with Republicans in Congress who call for an independent investigation.

Hacking the 2016 US election: a timeline

Obama expels diplomats

At the end of December, the Obama administration expels 35 Russian diplomats and shuts down two Russian intelligence compounds as the Kremlin continues to deny having a role in the summer's cyberattacks. President Putin eschews direct retaliation, saying he will wait to see how President-elect Trump's Russia policies play out.